apt-pkg/packagemanager.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* ######################################################################
   4
   5    Package Manager - Abstacts the package manager
   6
   7    Three steps are
   8      - Aquiration of archives (stores the list of final file names)
   9      - Sorting of operations
  10      - Invokation of package manager
  11
  12    This is the final stage when the package cache entities get converted
  13    into file names and the state stored in a DepCache is transformed
  14    into a series of operations.
  15
  16    In the final scheme of things this may serve as a director class to
  17    access the actual install methods based on the file type being
  18    installed.
  19
  20    ##################################################################### */
  21                                                                         /*}}}*/
  22 #ifndef PKGLIB_PACKAGEMANAGER_H
  23 #define PKGLIB_PACKAGEMANAGER_H
  24
  25 #include <apt-pkg/pkgcache.h>
  26 #include <apt-pkg/init.h>
  27 #include <apt-pkg/macros.h>
  28
  29 #include <string>
  30 #include <set>
  31
  32 #ifndef APT_10_CLEANER_HEADERS
  33 #include <apt-pkg/install-progress.h>
  34 #include <iostream>
  35 #endif
  36 #ifndef APT_8_CLEANER_HEADERS
  37 #include <apt-pkg/depcache.h>
  38 using std::string;
  39 #endif
  40
  41 class pkgAcquire;
  42 class pkgDepCache;
  43 class pkgSourceList;
  44 class pkgOrderList;
  45 class pkgRecords;
  46 namespace APT {
  47    namespace Progress {
  48       class PackageManager;
  49    }
  50 }
  51
  52
  53 class pkgPackageManager : protected pkgCache::Namespace
  54 {
  55    public:
  56
  57    enum OrderResult {Completed,Failed,Incomplete};
  58    static bool SigINTStop;
  59
  60    protected:
  61    std::string *FileNames;
  62    pkgDepCache &Cache;
  63    pkgOrderList *List;
  64    bool Debug;
  65    bool NoImmConfigure;
  66    bool ImmConfigureAll;
  67
  68    /** \brief saves packages dpkg let disappear
  69
  70        This way APT can retreat from trying to configure these
  71        packages later on and a frontend can choose to display a
  72        notice to inform the user about these disappears.
  73    */
  74    std::set<std::string> disappearedPkgs;
  75
  76    void ImmediateAdd(PkgIterator P, bool UseInstallVer, unsigned const int &Depth = 0);
  77    virtual OrderResult OrderInstall();
  78    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  79    bool CreateOrderList();
  80
  81    // Analysis helpers
  82    bool DepAlwaysTrue(DepIterator D) APT_PURE;
  83
  84    // Install helpers
  85    bool ConfigureAll();
  86    bool SmartConfigure(PkgIterator Pkg, int const Depth) APT_MUSTCHECK;
  87    //FIXME: merge on abi break
  88    bool SmartUnPack(PkgIterator Pkg) APT_MUSTCHECK;
  89    bool SmartUnPack(PkgIterator Pkg, bool const Immediate, int const Depth) APT_MUSTCHECK;
  90    bool SmartRemove(PkgIterator Pkg) APT_MUSTCHECK;
  91    bool EarlyRemove(PkgIterator Pkg, DepIterator const * const Dep) APT_MUSTCHECK;
  92    APT_DEPRECATED bool EarlyRemove(PkgIterator Pkg) APT_MUSTCHECK;
  93
  94    // The Actual installation implementation
  95    virtual bool Install(PkgIterator /*Pkg*/,std::string /*File*/) {return false;};
  96    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
  97    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
  98    virtual bool Go(APT::Progress::PackageManager * /*progress*/) {return true;};
  99    virtual bool Go(int /*statusFd*/=-1) {return true;};
 100
 101    virtual void Reset() {};
 102
 103    // the result of the operation
 104    OrderResult Res;
 105
 106    public:
 107
 108    // Main action members
 109    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
 110                     pkgRecords *Recs);
 111
 112    // Do the installation
 113    OrderResult DoInstall(APT::Progress::PackageManager *progress);
 114    // compat
 115    APT_DEPRECATED OrderResult DoInstall(int statusFd=-1);
 116
 117    // stuff that needs to be done before the fork() of a library that
 118    // uses apt
 119    OrderResult DoInstallPreFork() {
 120       Res = OrderInstall();
 121       return Res;
 122    };
 123    // stuff that needs to be done after the fork
 124    OrderResult DoInstallPostFork(APT::Progress::PackageManager *progress);
 125    // compat
 126    APT_DEPRECATED OrderResult DoInstallPostFork(int statusFd=-1);
 127
 128    // ?
 129    bool FixMissing();
 130
 131    /** \brief returns all packages dpkg let disappear */
 132    inline std::set<std::string> GetDisappearedPackages() { return disappearedPkgs; };
 133
 134    explicit pkgPackageManager(pkgDepCache *Cache);
 135    virtual ~pkgPackageManager();
 136
 137    private:
 138    void * const d;
 139    enum APT_HIDDEN SmartAction { UNPACK_IMMEDIATE, UNPACK, CONFIGURE };
 140    APT_HIDDEN bool NonLoopingSmart(SmartAction const action, pkgCache::PkgIterator &Pkg,
 141       pkgCache::PkgIterator DepPkg, int const Depth, bool const PkgLoop,
 142       bool * const Bad, bool * const Changed) APT_MUSTCHECK;
 143 };
 144
 145 #endif